US Bridges

US 20 Ebl over Stc 6708; ST Leon RD Ic

Good

Bonneville County, Idaho · 4.0 S.W. Ucon · Structure no. 000000000012373

Built
2005
20 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
111 ft
1 main span
Daily traffic
13,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 20 Ebl over Stc 6708; ST Leon RD Ic is a prestressed concrete stringer/multi-beam or girder carrying US 20 Ebl over Stc 6708; ST Leon RD Ic in Bonneville County, Idaho. It was built in 2005, so it is 20 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 13,000 vehicles a day, roughly 11% of them trucks, projected to reach 19,500 by 2042. The structure is 111 ft (33.8 m) long and 43 ft wide.

CarriesUS 20 Ebl
CrossesStc 6708; ST Leon RD Ic
Location4.0 S.W. Ucon
RouteU.S. Route 20
StateIdaho
Coordinates43.543, -112.00494
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103 US tons
Inventory rating41 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length111 ft (33.8 m)
Longest span111 ft (33.8 m)
Deck width43 ft (13.2 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2023)
Projected traffic19,500 by 2042
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 20 Ebl over Stc 6708; ST Leon RD Ic built?

It was built in 2005, making it 20 years old in 2025.

What condition is US 20 Ebl over Stc 6708; ST Leon RD Ic in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does US 20 Ebl over Stc 6708; ST Leon RD Ic carry?

About 13,000 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 20 Ebl over Stc 6708; ST Leon RD Ic?

The structure is 111 ft (33.8 m) long with a longest span of 111 ft (33.8 m) and a deck 43 ft wide.

Who owns US 20 Ebl over Stc 6708; ST Leon RD Ic?

It is owned by the State Highway Agency.